memcg: remove EXPORT_SYMBOL(mem_cgroup_update_page_stat)

As described in the log, I guess EXPORT was for preparing dirty
accounting.  But _now_, we don't need to export this.  Remove this for
now.

Signed-off-by: KAMEZAWA Hiroyuki <kamezawa.hiroyu@jp.fujitsu.com>
Reviewed-by: Greg Thelen <gthelen@google.com>
Cc: Johannes Weiner <hannes@cmpxchg.org>
Cc: Michal Hocko <mhocko@suse.cz>
Cc: KOSAKI Motohiro <kosaki.motohiro@jp.fujitsu.com>
Cc: Ying Han <yinghan@google.com>
Acked-by: Johannes Weiner <hannes@cmpxchg.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>

1 files changed, 0 insertions, 1 deletions

diff --git a/mm/memcontrol.c b/mm/memcontrol.c
index 88113ee32ac8..eba04a481e03 100644
--- a/mm/memcontrol.c
+++ b/mm/memcontrol.c
@@ -1930,7 +1930,6 @@ out:
                 move_unlock_page_cgroup(pc, &flags);
         rcu_read_unlock();
 }
-EXPORT_SYMBOL(mem_cgroup_update_page_stat);
 
 /*
  * size of first charge trial. "32" comes from vmscan.c's magic value.